This is an interesting bug report, as I never had a problem pressing the 0 button on the Rio remote in 1.03, or any other software release for that matter.

I have a hunch that it's a hardware problem with your Rio Remote. Applying pressure in a certain place (in your case the 0 key) causes something to become disconnected inside the remote, and makes it cease to function until you "reboot" it by removing and re-inserting the battery.

Anyone think this sounds logical?